|Author:||Senatore, K. A. ; Goorahoo, D. ; Benes, S. E. ; Ayars,J. E.|
|Book Group Author:||NA|
Soil salinity, shallow saline groundwater, and drainage water disposal all pose major challenges to agriculture on the westside San Joaquin Valley (SJV). This study was carried out to provide soil water retention curves for soils affected by irrigation with saline-sodic drainage-water. These are needed for modelling of water and salt movement in Integrated On-farm Drainage Management (IFDM) systems that are being developed. An integrated hydrological model is being developed to evaluate flow and migration processes, and their interaction with the regional groundwater systems in an IFDM. These models are needed to estimate the leaching fractions required to avoid excessive salt loading in IFDM and other systems that re-use saline-sodic waters for irrigation. Soil water retention characteristics vary with texture, soil type, time, and the degree to which the soil has salinized and/or become sodic. It appears that saturated hydraulic conductivity is greatly reduced, at least when nonsaline water percolates through the soil, such as during periods of winter rain.
|Pages:||143 - 146|
|Journal:||International salinity forum - managing saline soils andwater: science, technology and social issues. Poster PresentationAbstracts, Riverside Convention Center, Riverside, California, USA,25-28 April 2005|
drainage systems, drainage water, irrigation water,leaching, mathematical models, percolation, rain, saline water,salinization, salts, saturated conditions, seasonal variation, sodicsoils, soil management, soil texture, soil water retention, temporalvariation, water quality, water reuse, winter, California, USA, PacificStates of USA, Western States of USA, USA, North America, America,Developed Countries, OECD Countries, ground water, hydraulic properties,movement in soils, soil type, subsurface flow, rainfall, salt water,seasonal changes, seasonal fluctuations, United States of America, watercomposition and quality, Soil Water Management (Irrigation and Drainage)(JJ800) (Revised June 2002) [formerly Soil Water Management], WaterResources (PP200), Pollution and Degradation (PP600), Soil Fertility(JJ600), Soil Physics (JJ300), Mathematics and Statistics (ZZ100), SoilManagement (JJ900)